Question 1

Which version has the greatest resistance?

Accepted Answer

Dear customer, I am writing to you at 22:00 Japan time.
Paste your review below;
RPMSports Powerball promises high quality that sets it apart from other manufacturers' products, such as smoothness of rotation, quietness, and robustness.

It is sold in more than 20 countries around the world and has a wide range of users from professional athletes to children.

Not only strength training results,

The results of research on the effectiveness of rehabilitation and injuries were announced at a famous university, and it was certified as a medical device in South Korea.

It is also proven to be effective in rehabilitation and injury prevention.

These achievements are proven because of the high quality of the Powerball made by RPMSports.

In recent years, many Powerball imitations have been sold,

We hope that you will not be deceived by other products' unreliable sales performance, exaggerated expressions and misleading product descriptions.

We often receive feedback that it would have been better if they had purchased a Powerball made by RPMSports from the beginning.

We recommend the highest quality Powerball for the best training.

We apologize for not meeting your expectations.

Thank you for your continued support of Kyoto Clean Service.

Question 2

What does 280 Hz mean

Accepted Answer

That it's not 279 Hz.  Nor a 281 Hz. I hope this helped.

Question 3

Does this ball vibrate at 280Hz?  Do you feel a sense of vibration or not?  I don't understand the relationship between 280Hz and 17,000 rpm

Accepted Answer

You can feel the ball rotate or vibrating while using it.

ASIN	B00NIY71DO
Age Range Description	Adult
Best Sellers Rank	#264,697 in Sports, Fitness & Outdoors ( See Top 100 in Sports, Fitness & Outdoors ) #49 in Gyroscopic Hand Exercise Balls
Brand Name	Powerball
Colour	1 Size
Core Material	stainless steel
Customer Reviews	4.4 4.4 out of 5 stars (2,327)
Global Trade Identification Number	05060109201246
Item Type Name	Powerball Gyroscope
Item Weight	263 Grams
Manufacturer	RPM Sports
Manufacturer Part Number	PB688A
Material Type	Plastic
Model Number	280Hz Autostart Classic
Number of Items	1
Number of Packs	1
Size	1
Sport Type	All
Whats In The Box1 - Whats In The Box3	Powerball

NSD Powerball Autostart Gyro Classic

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